1:(4 + 5 - 6) × 8
2:((4 + 5) - 6) × 8
3:(4 + (5 - 6)) × 8
4:(4 - 6 + 5) × 8
5:((4 - 6) + 5) × 8
6:(4 - (6 - 5)) × 8
7:(5 + 4 - 6) × 8
8:((5 + 4) - 6) × 8
9:(5 + (4 - 6)) × 8
10:(5 - 6 + 4) × 8
11:((5 - 6) + 4) × 8
12:(5 - (6 - 4)) × 8
13:8 × (4 + 5 - 6)
14:8 × ((4 + 5) - 6)
15:8 × (4 + (5 - 6))
16:8 × (4 - 6 + 5)
17:8 × ((4 - 6) + 5)
18:8 × (4 - (6 - 5))
19:8 × (5 + 4 - 6)
20:8 × ((5 + 4) - 6)
21:8 × (5 + (4 - 6))
22:8 × (5 - 6 + 4)
23:8 × ((5 - 6) + 4)
24:8 × (5 - (6 - 4))